Fly-exit for screens.



No. 753,932. PATBNTEfi MAR; *8, "1904.

B. B. STOVER. 4

FLY EXIT FOR SUREENS.

arrmonmn FILED snrw. e, 1902.

NO MODEL.

UNTTED STATES ratented March 8, 1904:.

EMORY ELLSWORTH STOVER, OF BIGELOVV, MINNESOTA.

FLY-EXIT FOR SCREENS.

SPECIFICATION forming part of Letters Patent No. 753,932, dated March 8,1904.

' Application filed September 6, 1902. Serial No. 122,441. (No model.)

To all whom it may concern:

Be it known that I, EMORY ELLSWORTH STovER, a citizen of the UnitedStates, and a resident of Bigelow, Minnesota, have invented .a new anduseful Fly-Exit for Screens, of

which the following is a specification.

This invention relates to an improved flyexit for screens designed foruse on windows, doors, and the like, and has for its object to provide asimple, inexpensive, and eflicient device of this character which willinsure the egress of house-flies or other insects on the inner face ofthe screen and at the same time eflzlectually prevent their ingress fromthe outsi e.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended, itbeing understood that various changes in form, proportion, and minordetails of construction may be resorted to without departing from thespirit or sacrificing any of the advantages of this invention.

In the accompanying drawings, Figure 1 is a perspective View of aWindow-screen provided with a fly-exit constructed in accordance with myinvention. Fig. 2 is a transverse sectional View of the same; Fig. 3, aperspective view of a portion of the screen with the cap and triangularblocks detached, and Fig. 4 is a perspective view of the cap andtriangular blocks.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawings.

1 designates a rectangular screen-frame comprising the side bars 2 andtop and bottom bars 3 and 4:, the upper portion of the side bars 2 beinginclined or beveled, as shown at 5. Secured to the frame in any suitablemanner is a sheet of screen material, such as-wire-gauze,

the upper portion of the wire-gauze being bent inwardly, as shown at 6,to conform to the inclination of the side bars and fastened to the topbar-3 by means of a plate 7, which forms one of the side walls of apassage 8 for the exit of the flies or other insects. A pair ofsubstantially triangular blocks 9 are secured in any suitable manner tothe inclined ends of the side bars 2, and connecting said blocks is abar 10, having an inclined or beveled face 11. The bar 10 is spaced fromthe top of the frame, as shown, to form the passage 8, and secured tothe inclined face of the bar is a plate 12, which lies substantiallyparallel with the plate 7 and forms the opposite side wall of saidpassage. Secured to the bars 3 and 10 at the top of the frame is asubstantially triangular cap 13, closed at its ends, as shown, whichforms a chamber 14:, into which flies or other insects crawl afterpassing through the opening or passage 8. The converging side walls 15and 16 of the cap 13 are spaced apart at the apex of said cap to form alongitudinal slot or opening 16 to permit egress of the flies from thechamber to the outside or exterior of the building, the side wall 15being somewhat longer and extending a short distance over and beyond theupper edge of the side wall 16, so as to protect the top of the screenfrom the elements and also to reflect the light downwardly through thepassage 8 to attract the flies.

In operation the'flies or other insects on the inner face of the screenare attracted by the light reflected through the passage 8 from theopening 16 in the cap and crawl upwardly through said passage into thechamber 14, and being unable to return by reason of the contracted mouthof said passage will pass out through the longitudinal opening 16 in thecap.

The plate 7 forms one of the side walls of the passage 8 and also servesto secure the upper edge of the screen to the frame, while thetriangular cap not only forms a chamber for the flies, but also acts asa casing or'housing to protect the top of the screen from the elements.

From the foregoing description it will be seen that I have'provided anexceedingly simple and inexpensive fly-exit which may be readily appliedto screens already in use, as well as those in course of construction,and by means of which insects crawling on the inner face of the screenare directed to the exterior and their return effectually prevented.

Having thus described the invention, what I claim, and desire to secureby Letters Patent, is V 1. In a fiy-exit for Screens, the combinationwith a frame, of a sheet of screen material secured thereto and havingits upper portion bent inwardly at an angle to the general plane of thescreen material, a bar secured to the frame and spaced from the screento form a passage, and a cap having converging side walls secured to theframe and provided with an opening at its apex.

2. In a fly-exit for screens, the combination with a frame, of a sheetof screen material secured thereto and having its upper portion bentinwardly at an angle to the general plane of the screen material, a barprovided with an upwardly extending plate secured to the frame andspaced from the screen to form a passage, a corresponding plate carriedby the frame, and a cap having converging side walls secured to the topof the frame and provided with a longitudinal opening at its apex.

3. In a ii y-exit for screens, the combination with a frame, of asheetof screen material secured thereto and having its upper portion bentinwardly at an angle to the general plane of the screen material, a barprovided with an upwardly extending plate secured to the frame andspaced from the screen to form a passage, a corresponding plate carriedby the frame, and a triangular-shaped cap, one of the side walls ofwhich extends above and in advance of the other to form an openin 4. Ina fly-exit for screens, the combination with a frame, having its upperportion inclined or beveled, a sheet of screen material secured to theframe and bent to conform to the inclined portion thereof, a barprovided with an upwardly-extending plate secured to the frame andspaced from the screen to form a passage, a corresponding plate securedto the top of the frame and forming a continuation of the screen, and acap having converging side walls secured to the top of the frame, one ofsaid side walls extending above and in advance of the other to form anopenin 5. In a fly-exit for screens, the combination with a frame havingits upper portion inclined or beveled, a sheet of screen materialsecured to the frame and bent to conform to the inclined portionthereof, a pair of triangular blocks secured to the frame, a bar havingan inclined or beveled face secured to the blocks and spaced from theframe to form a passage, an upwardly-extending plate secured to theinclined face of the bar, a corresponding plate secured to top of theframe, and serving to secure the top edge of the screen material inposition and a cap having converging side walls secured to the frame andprovided with a longitudinally-disposed opening at its apex.

EMORY ELLSWORTH STOVER. In presence of- G. M. GLIOK, C. H. GLIoK.

